2640287540264 has 24 divisors (see below), whose sum is σ = 5441501699130. Its totient is φ = 1200130699680.

The previous prime is 2640287540257. The next prime is 2640287540333. The reversal of 2640287540264 is 4620457820462.

It can be written as a sum of positive squares in only one way, i.e., 2127834864100 + 512452676164 = 1458710^2 + 715858^2 .

It is a super-2 number, since 2×2640287540264² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1363783919 + ... + 1363785854.

Almost surely, 2^{2640287540264} is an apocalyptic number.

It is an amenable number.

2640287540264 is an abundant number, since it is smaller than the sum of its proper divisors (2801214158866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2640287540264 is a wasteful number, since it uses less digits than its factorization.

2640287540264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727569801 (or 2727569786 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 50.

The spelling of 2640287540264 in words is "two trillion, six hundred forty billion, two hundred eighty-seven million, five hundred forty thousand, two hundred sixty-four".